BOBWEIGHT PLACEMENT
I always “phase” my bobweights. I start by screwing in a couple bolts into the crankshaft flange. It seems to be a good starting place and seems to place the first throw up. I level across the bolts then 0 my degree wheel. Then I level each Bobweight at 0, 90, 180 & 270. I have rebalanced cranks with a piston weight change that I did previously, and it always comes back to the same correction area. Also, don’t forget to center the bobweight on the journal.

Randy Torvinen
Torvinen’s Machine
Menahga, MN
August, 2021